<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>ajax-formData数据</title>
    <script src="jquery.js"></script>
</head>

<body>
    <form action="index.html" method="post" enctype="multipart/form-data">
        <input type="text" name="username" placeholder="请输入用户名"> <br>
        <input type="password" name="password" placeholder="请输入密码"> <br>
        <input type="file" name="photo"><br>
        <button type="submit">登录</button>
    </form>
</body>

<script>
    $('form').submit(function(ev){
        ev.preventDefault();
        var data = new FormData(this);
        // 添加formdata对象的数据
        data.append('time',new Date())
        console.log(data);

        $.post({
            url:'index.html',
            data:data,
            processData:false,   //阻止默认的数据内容被转换成字符串,设置什么类型,提交什么类型
            contentType:false,   //默认数据内容类型时urlencoded,阻止默认的内容类型,设置什么类型,提交什么类型
            success:function(resData){

            }
        })
    })
   
</script>

</html>